TY - JOUR
TI - Research on the energy-saving effect of composite film materials on smart windows based on optical properties
AU - Luo Xiangxiang
AU - Li Feng
AU - Qiao Chengfang
AU - Yuan Fei
AU - Zhou Chunsheng
JN - Thermal Science
PY - 2023
VL - 27
IS - 3
SP - 2183
EP - 2194
PT - Article
AB - As the industrial and economic level continues to develop, the urban heat  island effect is then serious. In order to control the indoor temperature in  life and production and improve the indoor environment in summer, the study  was conducted on composite film materials for smart windows for buildings.  An optical analysis of the cooling requirement was conducted first, and then  the material was modified based on this, and a composite film material based  on polydimethylsiloxane (PDMS) and Ag coating was made. The test results  show that the composite film can change the spectral absorption of the  object and reduce the temperature of the object by 16.7 °C under the same  light scenario. Tests on commonly used low-e glass show that the composite  film material can reduce room temperature with increased sunlight  transmission. Finally, a cooling test on PV panels used for building energy  efficiency effectively reduced the operating temperature of the units,  although it could not directly affect the power generation efficiency. This  shows that the PDMS composite film based on optical properties can reduce  the indoor temperature, thus reducing the power of electric cooling. The  energy saving effect has positive significance for building windows.